forked from NativeScript/NativeScript
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathbuilder.ts
More file actions
219 lines (179 loc) · 8.6 KB
/
builder.ts
File metadata and controls
219 lines (179 loc) · 8.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
import view = require("ui/core/view");
import fs = require("file-system");
import xml = require("xml");
import file_access_module = require("file-system/file-system-access");
import types = require("utils/types");
import componentBuilder = require("ui/builder/component-builder");
import templateBuilderDef = require("ui/builder/template-builder");
var KNOWNCOLLECTIONS = "knownCollections";
export function parse(value: string, exports: any): view.View {
var viewToReturn: view.View;
var componentModule = parseInternal(value, exports);
if (componentModule) {
viewToReturn = componentModule.component;
}
return viewToReturn;
}
function parseInternal(value: string, exports: any): componentBuilder.ComponentModule {
var rootComponentModule: componentBuilder.ComponentModule;
// Temporary collection used for parent scope.
var parents = new Array<componentBuilder.ComponentModule>();
var complexProperties = new Array<ComplexProperty>();
var templateBuilder: templateBuilderDef.TemplateBuilder;
// Parse the XML.
var xmlParser = new xml.XmlParser((args: xml.ParserEvent) => {
if (templateBuilder) {
if (args.eventType === xml.ParserEventType.StartElement) {
templateBuilder.addStartElement(args.elementName, args.attributes);
} else if (args.eventType === xml.ParserEventType.EndElement) {
if (templateBuilder.elementName !== args.elementName) {
templateBuilder.addEndElement(args.elementName);
} else {
templateBuilder.build();
templateBuilder = undefined;
}
}
}
// Get the current parent.
var parent = parents[parents.length - 1];
var complexProperty = complexProperties[complexProperties.length - 1];
// Create component instance from every element declaration.
if (args.eventType === xml.ParserEventType.StartElement) {
if (isComplexProperty(args.elementName)) {
var name = getComplexProperty(args.elementName);
complexProperties.push({
parent: parent,
name: name,
items: [],
});
if (templateBuilderDef.isKnownTemplate(name, parent.exports)) {
templateBuilder = new templateBuilderDef.TemplateBuilder({
parent: parent,
name: name,
elementName: args.elementName,
templateItems: []
});
}
} else {
var componentModule: componentBuilder.ComponentModule;
if (args.namespace) {
// Custom components
var xmlPath = fs.path.join(fs.knownFolders.currentApp().path, args.namespace, args.elementName) + ".xml";
if (fs.File.exists(xmlPath)) {
// Custom components with XML
var jsPath = xmlPath.replace(".xml", ".js");
var subExports;
if (fs.File.exists(jsPath)) {
// Custom components with XML and code
subExports = require(jsPath.replace(".js", ""))
}
componentModule = loadInternal(xmlPath, subExports);
} else {
// Custom components without XML
componentModule = componentBuilder.getComponentModule(args.elementName, args.namespace, args.attributes, exports);
}
} else {
// Default components
componentModule = componentBuilder.getComponentModule(args.elementName, args.namespace, args.attributes, exports);
}
if (componentModule) {
if (parent) {
if (componentModule.component instanceof view.View) {
if (complexProperty) {
// Add to complex property to component.
addToComplexProperty(parent, complexProperty, componentModule)
} else if ((<any>parent.component)._addChildFromBuilder) {
// Add component to visual tree
(<any>parent.component)._addChildFromBuilder(args.elementName, componentModule.component);
}
} else if (complexProperty) {
// Add component to complex property of parent component.
addToComplexProperty(parent, complexProperty, componentModule);
}
} else if (parents.length === 0) {
// Set root component.
rootComponentModule = componentModule;
}
// Add the component instance to the parents scope collection.
parents.push(componentModule);
}
}
} else if (args.eventType === xml.ParserEventType.EndElement) {
if (isComplexProperty(args.elementName)) {
if (complexProperty) {
if (parent && (<any>parent.component)._addArrayFromBuilder) {
// If parent is AddArrayFromBuilder call the interface method to populate the array property.
(<any>parent.component)._addArrayFromBuilder(complexProperty.name, complexProperty.items);
complexProperty.items = [];
}
}
// Remove the last complexProperty from the complexProperties collection (move to the previous complexProperty scope).
complexProperties.pop();
} else {
// Remove the last parent from the parents collection (move to the previous parent scope).
parents.pop();
}
}
}, (e) => {
throw new Error("XML parse error: " + e.message);
}, true);
xmlParser.parse(value.replace('xmlns="http://www.nativescript.org/tns.xsd"', "").replace("xmlns='http://www.nativescript.org/tns.xsd'", ""));
return rootComponentModule;
}
export function load(fileName: string, exports: any): view.View {
var viewToReturn: view.View;
var componentModule = loadInternal(fileName, exports);
if (componentModule) {
viewToReturn = componentModule.component;
}
return viewToReturn;
}
function loadInternal(fileName: string, exports: any): componentBuilder.ComponentModule {
var componentModule: componentBuilder.ComponentModule;
// Check if the XML file exists.
if (fileName && fs.File.exists(fileName)) {
var fileAccess = new file_access_module.FileSystemAccess();
// Read the XML file.
fileAccess.readText(fileName, result => {
componentModule = parseInternal(result, exports);
}, (e) => {
throw new Error("Error loading file " + fileName + " :" + e.message);
});
}
if (componentModule && componentModule.component) {
// Save exports to root component (will be used for templates).
(<any>componentModule.component).exports = exports;
}
return componentModule;
}
function isComplexProperty(name: string): boolean {
return types.isString(name) && name.indexOf(".") !== -1;
}
function getComplexProperty(fullName: string): string {
var name: string;
if (types.isString(fullName)) {
var names = fullName.split(".");
name = names[names.length - 1];
}
return name;
}
function isKnownCollection(name: string, exports: any): boolean {
return KNOWNCOLLECTIONS in exports && exports[KNOWNCOLLECTIONS] && name in exports[KNOWNCOLLECTIONS];
}
function addToComplexProperty(parent: componentBuilder.ComponentModule, complexProperty, elementModule: componentBuilder.ComponentModule) {
// If property name is known collection we populate array with elements.
var parentComponent = <any>parent.component;
if (isKnownCollection(complexProperty.name, parent.exports)) {
complexProperty.items.push(elementModule.component);
} else if (parentComponent._addChildFromBuilder) {
parentComponent._addChildFromBuilder("", elementModule.component);
} else {
// Or simply assign the value;
parentComponent[complexProperty.name] = elementModule.component;
}
}
interface ComplexProperty {
parent: componentBuilder.ComponentModule;
name: string;
items?: Array<any>;
}